package com.shf;

public class Demo26 {
  public static void main(String[] args) {
    int[][] arr=new int[][]{{3,5,8},{12,9},{7,0,6,4}};
    int sum=0;
    for (int i = 0; i < arr.length; i++) {
      for (int j = 0; j < arr[i].length; j++) {
        sum+=arr[i][j];
      }
    }
    System.out.println("sum="+sum);
  }
}
